Liquid-measuring apparatus



Oct. 15, 1929.- R. PORTE LIQUID MEASURING APPARATUS Filed March 1928 5Sheets-Sheet 1 Oct. 15, 1929. a. PORTE 1,732,063

LIQUID MEASURING APPARATUS Filed March 1928 5 Sheets-Sheet 2 Oct.15,1929. R. FORTE 1,732,063

LIQUID MEASURING APPARATUS Filed March 8, 192a 5 Sheetg-Sheet 3 59 0 654- 55 a 56 l x 51 4y i E 1:

I 45 f} /77 j I 79- 48 49 50 Oct. 15, 1929. R. P ORTE LIQUID mmsunmeAPPARATUS Filed March 1928 5 Sheets-sheet 4 Oct. 15, 1929. R. PORTE1,732,063

LIQUID MEASURING APPARATUS Filed. Marohs. 1928 5 Sheets-Sheet 5 IPatented Oct. 15, 1929 UNITED STATES PATENT OFFICE RENE POBTE, OILEVLLIDIS-PERRET, FB ANOI, ASSIGNOR TO BOCIE'IE HAD-DOLL BTAB LISSEIENTSHABIVEAU I'll. DOLIHIER ET RENE POB'IE 'E'l' CIR. UNIS, F

LEVALLOIS-PEBBET, FRANCE LIGUID-IEASUBDTG APPARATUS Application filedlarch 8, 1988, Serial No.

The present invention relates to liquid measuring apparatus and, moreparticularly, to those of the type provided with a pair of tanksarranged to alternately deliver measured quantities of liquid. 7

One of the objects ofthe invention is to provide means automaticallyoperable to empty the tanks and to return the indicating dial to zero assoon as the delivery conduit is suspended on its hook.

Other objects will appear in the course of the detailed description nowto be given with reference to ille accompanying drawings, in which Fig.1 is a side view (with parts of the exterior casing removed) of oneillustrative embodiment of the invention Fig. 2 shows the same device invation;

Fig. 3 represents an axial section of the tank assembly;

front ele- Fig. 4 illustrates, in section, the tank feed and dischargecontrols;

Fig. 5 is a section taken on line A--B 25 of Fig. 4 and showstheindicating device on mechanism on the left;

Fig. 6 is a sideview (outer parts removed) representing the side of Fig.5 containing th the right side of the figure and the reversing reversingmechanism;

7 is a section taken on line CD of Fig 6;

ig. 8 is a side view (outer parts removed) of the indicator side of Fig.5;

Fig. 9 shows in elevation a detail of the li uid control mechanism;

ig. 10 a section taken on line E-F of Fi 9. p v

fieferring to the various figures of the drawings there is' shown aframe 1, suporting a pump 2 which is connected through ter 3, to a feedand discharge reversing.

mechanism 5 adapted to su ply liquid alternately to tanks 6 and 7. edevice is fitted with a single door 4 provided with an orificepermitting a pump lever to be attached to or detached from pump 2. Acolumn 8 supports a lamp globe 9', and an apron 10 extending over andprotecti tanks 6 and 7. Tanks 6 and 7 are, convemently formed of200,1:04, and in Belgium Inch 15, 1927.

glass cylinders 12/ hermetically seated in annular grooves formed inbottom elements 11 and top-closures 13, the whole assembly closures 13are each provided with a,floatchamber 15 containing a float-valve I5 ,-afusible plug 16,-and a compressed air-line 17? for accelerating discharof each A conduit 17 is interposed tween closures 13 to assureequalization of the pressures over each tank.

The liquid discharged from pump 2 flows through orifice 19 into thereversing mechamsm, moves past valve 20 (which, as will be shown later,is controlled by the indicator assembly), into chamber 21 (Fig. 5), theninto one of the measu tanks (tank 6 in the position of the o ratmelements illustrated in Fig. 4) 1 en 6 is completely being held togetherby tie-rods 14. Topeach tank is provided with a correcting chamber 27whose volume ma be varied by adjusting the position of a piston 28forming one wall thereof. The hquid being discharged from tank 7 duringthe filling of tank 6 passes into chamber 29, then through orifice 30into the flexible delivery" conduit. The reversing movement of pistondiaphragm 22 is communicated by a lever 31 to a shaft 32 connected tolever and spring system 25 hereinabove mentioned. A lever 33 is keyed toone end of shaft 32 and the same extremity of the shaft carries a pairof links loosely mounted on opposite sides of lever 33. The free end oflever 33 is forked and coacts with a roller mo'unted on shaft "35 whichis journalled in a block 36 f0 one end of an extensible telemopic link37 tted with a compression spring. The other extremity of link 37carries a shaft 38 which articulates with the lower extremities of links34. Shaft 38 extends into a U-shaped recess formed at one-end of a lever39 keyed to a shaft 40 which actuates a second lever 41 connected topiston-valve 26. The lengths and osition of the various levers and linksare c losen in the manner described in applicants co-pending applicationSerial No, 138,241, filed Sept. 28, 1926, i. e. so that piston-valve 26is abruptly forced from one extreme position to the other slightlybefore piston-diaphragm 22 reaches its dead-point.

' It will be noted that compression sprm redisc, carrying numbers whichmove past an opening 46 (Fig. 2). Disc may be rotated to any position ofadjustment by means of small hand wheel 47 which is coupled at 48 to ashaft 49 carrying a toothed wheel 50 meshing with a second toothed wheel51 (Figs. 5 and 8) which forms part of a rotatable assembl mounted torotate freely on shaft 52. his rotatable assembly comprises: aconcentric disc 53 having a recess or cam surface formed in theperiphery thereof functioning to displace a reciprocable element 54 tobe described further on (Fig. 8) a pair of ratchet-wheels 55 and 56riveted to wheel 51 and to one another, wheel 56 having 43 and connectedat its other extremity to casing 57. Shaft 52 is rigidly connected to asecond assembly mounted thereon comprising: a casing 59 carrying aspiral spring 60, said casing being formed integral with a toothed wheel61; and a pair of ratchet wheels 62 and 63 rigidly connected to casing59, wheel 62 coacting with a spring actuated detent 64 while wheel 63engages with a similar detent element 65 mounted on the rotatableassembly associated with spring 58. Element 65 is provided with a tailportion 66 positioned to slide over a fixed stop 67, whereby nose 68moves out of engagement with wheel 63 (Fig. 8) when the device is not inoperation while -detent 64 is normally held in contact with ratchet 62under the action of spring 69.

Reciprocable element 54 has an elongated orifice 70 formed therethroughwhich engages with a guide-pin 71 and articulates at elements 42, 43 and72 with a lever 73 keyed to a shaft which actuates valve 20 through theintermediary of a lever 75 (Fig. 7). Valve 20 tends to move into openposition when reciprocable element 54 is moved outwardly by guidingsurface 53.

Ratchets 55 and 56 constitute a so-called anchor escapement in which onedetent is mounted on the end of a lever 76 pivotally mounted-at 77 whilethe other detent is associated with a second lever 78 likewise pivotedat 77. Lever 78 is oscillated by shaft 32 through the intermediary of alever 79 and a link 80 with each displacement of piston diaphragm 22(Fig. 4) and carries a stop 81 which contacts with the tail portion oflever 76 each time that lever 78 executes a downward movement. controlsa totalizer 83 showing totals which may be read through opening 83formed in the main recording disc (Fig. 2).-

. A hook 84, constituting the only means of suspension for the free endof the flexible delivery conduit not shown) forms one arm of a lever,pivoted at 85, whose other arm 86 carries a pin 87 capable of bearingagainst the tail-portions 88 and 89 of levers 64 and 76 re-- spectively.Arm 86 is connected to spring 90 which raises arm 84 as soon as thedelivery conduit is unhooked.

Toothed wheel 61 meshes with a pinion 91 keyed to a shaft 92 (Figs. 5and 8) which is designed to actuate indicator 44 through theintermediary of an appropriate train of gears.

The hereinabove described assembly operates in the following manner:Assuming that it is desired to deliver a predetermined quantity ofliquid, hand wheel 47' is rotated clockwise so as to move disc 45 to theposition where the desired quantity of liquid is indicated in opening46. Simultaneously valve 20 moves out of its seat and permits a fillingoperation to take place. The rotation of wheel 47 causes toothed wheel50 to rotate wheel 51 and casing 57 which is rigidly connected to thelatter in a counter clockwise direction thus winding up spring 58.Detent 65, articulated laterally on assembly 55, 56, 57, turns with thelatter until tail portion 66, which has been in contact with stop 67,moves away from the latter so that nose 68 of said detent, under theaction of a spring (not shown), slides over the teeth of ratchet 63. Inthe same operation, the teeth of ratchet 56 come into contact with thefree end of lever 76 and assembly 55, 56, 57 is held against the actionof spring 58 in the position determined by the arrest of hand wheel 47.As soon as pump 2 is actuated, liquid will flow into the apparatus andfill one of the measuring tanks in the manner already described. Whenreversal of iston diaphragm 22 takes place, shaft 32 will rotate. andoscillate lever 79 and link 80 thus lowering lever 78 so that nose 7 8moves into position between two teeth of ratchet 55. Nose 7 8 shouldmove downward The free end of lever 78 before the free end of lever 76releases the tooth with which it had been in engagement, it being notedthat stop 81 exercises pressure on tail portion 82 of lever 76 so as tomove the later out of engagement with and thus permits assembly 55,56,57 to rotate half the distance between a pair of teeth. By the timethat piston diaphragm reaches the end of its reversing course, nose .78will have moved out of engagement with ratchet 55, while the nose oflever 76 will have enga ed in the tooth next following so that assembly55, 56, 57 will have turned again (clockwise) through an angle corresonding to half the distance between a pair 0 teeth. Durin the rotationof 55, 56, 57, detent 65 will have been displaced in the, samedirection, and since nose-68 of the latter is engaged with ratchet 63,the-unwinding of 55, 56, 57 over a distance of one tooth will result ina corresponding rotation of assembly 60, 62, 63 thus producing adifference in the indications of the redetermining disc and the maindials. Ifands 44 and 44 will therefore have been advanced one unit overtheir dials and spring will have had its tension slightly increased.During the unwindin movement of 55, 56, 57, disc 45 will move ackwardand show a number difieringby one unit (less) than the one formerlyvisible through orifice 46. The foregoing operation repeats itself witheach reversal of piston diaphragm 22 until disc 45 indicates zero andhands 44 and 44 have advanced by an amount corresponding to the totalloss indicated by disc 45. At this point,

tail portion 66 of detent will have again moved onto stop 67 and thenose of said detent will be out of engagement with ratchet 63. Assembly60, 62, 63 and, therefore, hands 44 and 44 will be maintained inposition by the opposed action of sprin 60 and the engagement of detent64 w1th t e teeth of ratchet 62, thus permitting the buyer to note howmuch liquid has been delivered.

If, at the end of the foregoing operation, the buyer should decide totake an additional quantity of liquid, hand-wheel 47 is turned to thedesired amount and pump 2 actuated until disc 45 again indicates zero.Hands 44 and 44 will add the second purchase to the first and indicatethe amount taken in both operationsf. To bring 44 and 44 back to' zero,it suflices only to lower hook 84 by hanging the flexible deliveryconduit. thereon orv otherwise; Downward movement of arm 84 causes arm@6 to move upwardly thus actuating tailportions 88 and 89 of levers 64and 76 respec- ,tively. Detent 64 will thereupon release.

ratchet 62 thus permitting spring 60 to un-' wind and bring 44 and 44back to zero. Movement of 44 and 44 past the zero mark is prevented bythe contact of a finger 94 with a stop 93. The pressure of pin 87 ontailrtion 89 of lever 76 simultaneously releases wheel 56 which, underthe action of spring 58, brings disc 45 back to zero (this last appliesto the case where the predetermined amount of liquid has not beenentirely delivered), and rotates 53 back to the position where therecessed portion of its surface is opposite reciprocable element 54.Valve 20 then closes and stops the further feed of liquid to themeasuring tanks. The arrest of assembly 55, 56, 57 is assured b thecontact of one side of the recess forme in wheel 51 with element 54.

It is to be noted that in the present device, stuffing-boxes, because.of their unreliability, have been eliminated. In order to avoid liquidlosses, a draining system (Figs. 9 and 10) has been provided whichreturns any escaping liquid to the main fuel supply reservoir: Thusliquid finding its way into space 95 (Fig. 4) is returned viaconduits-96 and 97 (Fig. 10).

Shaft 74 controlling valve 20 is mounted so that a shoulder formedthereon is held firmly in contact with a surface through which the shaftpasses by a spring 99. In the event of leakage at the joint, theescaping liquid will accumulate in a small chamber 100 whence it will bereturned to the main reservoir by conduits 101 and 102. The sameanti-leakage system is employed in'connection with pump 2, whereinstufiing boxes of the usual type are employed us prevent entry of airand drainage chambers and conduits to prevent loss of liquid.

In order to empty a partially filled tank when the apparatus is not inoperation and valve 20 is in closed position, the latter is provided(Fig. 5) with a sleeve 103 pierced at 105 and having annular recesses104 formed therein which face drainage ports 106 (Fig. 10) when valve 20is in closed position. Ports 106 communicate with drainage conduit 102.

' What I claim is 1. In an ,apparatus of the class described, thecombination'of a liquid measuring assembly a pump connected to saidliquid measuring assembly, a delivery conduit, suspending means for saiddelivery conduit, and means operable by the suspensionof said deliveryvconduit on said suspending means to block communication between saidpump and said liquid measuring assembly.

2. In an apparatus of the class described,

the combination of a liquid measuring assembly, liquid indicating meansadapted to indicate the quantity of liquid delivered by said liquidmeasuring means. a delivery conduit, suspending means for said deliveryconduit, and means operable by the suspension of the delivery conduit onits suspending means to alter the indication of said liquid indicatingmeans.

3. In an apparatus of the class described, the combination of a liquidmeasuring assembly, a first indica means controlling the amount ofliquid to delivered, by said assembly, a second indicating means showingthe amount of liquid already delivered, a delivery conduit, sus endingmeans for said delivery conduit, an means operable by the sus- 5 pensionof said delivery conduit on its suspending means to alter theindications of said first and second indicating means.

4. In an apparatus of the class described, a liquid measuring assembly,a pump connected to said liquid measuring assembly, indicating meansassociated with ,said measuring assembly, a delivery conduit, suspendingmeans for said delivery conduit, and means operable by the suspension ofsaid conduit on its suspending means (1) to block communication betweenthe pump and the liquid measuring assembly and (2) to alter theindication of said indicating means.

5. In an apparatusof the class described, the combination of a pair ofliquid measuring tanks, means for alternately filling and dischargingeach tank, and a correcting chamber associated with one of said tanks,said correcting chamber having means associated 5 therewith-for varyingthe volume thereof.

6. In an apparatus of the class described a pair of measuring tanks,reciprocable means operable to control the alternate. filling anddischarge of eachtank, a pump adapted to supply liquid to said tanks, avalve controlling communication between said pump and said tanks, afirst indicating means controlling the amount of liquid to be deliveredby said tanks, means operable by said indicating :5 means to open andclose said valve, 9. second indicating means adapted to show the totalamount of liquid delivered by the measuring tanks, means operable by themovement of said reciprocable means to simultaneously de- 40 crease thereading of said first indicating means and increase the reading of saidsecond indicating means, a delivery conduit, suspending means for saiddelivery conduit, and means operable by the suspension of said de- 15livery conduit onits suspending means to close said valve and to alterthe reading of said'second indicating means.

7. In an apparatus of the class described a pair of measuring tanks, apump, a valve controlling communication between the pump and themeasuring tanks, said valve having a skirt portion formed thereon withan orifice therethrough, said skirt portion being positioned on the tankside of said valve, a wall enclosing said skirt portion of the valve andhaving a port formed therein at a level coinciding with that of theorifice of said skirt when thevalve is in closed position, and a conduitconnected to said port.

' In testimony whereof I have hereunto set my hand.

RENE PORTE.

